Several minor improvements of DirectX capturer

webrtc/modules/desktop_capture/win/d3d_device.h

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 25 matching lines @@
 
   // Returns all D3dDevice instances on the system. Returns an empty vector if
   // anything wrong.
   static std::vector<D3dDevice> EnumDevices();
 
  private:
   // Instances of D3dDevice should only be created by EnumDevices() static
   // function.
   D3dDevice();
 
-  // Initialize the D3dDevice from an IDXGIAdapter.
+  // Initializes the D3dDevice from an IDXGIAdapter.
   bool Initialize(const Microsoft::WRL::ComPtr<IDXGIAdapter>& adapter);
 
   Microsoft::WRL::ComPtr<ID3D11Device> d3d_device_;
   Microsoft::WRL::ComPtr<ID3D11DeviceContext> context_;
   Microsoft::WRL::ComPtr<IDXGIDevice> dxgi_device_;
   Microsoft::WRL::ComPtr<IDXGIAdapter> dxgi_adapter_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_D3D_DEVICE_H_